Cassidy Hancock hates being late-he's pathological about it. Until the crisp fall morning when he pauses to watch his neighbor's handsome son chase his dog down the sidewalk... and gets hit by a tree. Mark Taylor sees the whole thing, and as a second-year medical resident, he gets Cassidy top-notch care. In spite of himself, he's fascinated by his mother's stodgy neighbor, and as he strives to help Cassidy recover from a broken leg, he begins to realize that behind Cassidy's obsession with punctuality is the story of a lonely boy who thought he had to be perfect to be loved. Mark and his family are far from perfect-but they might be perfect for Cassidy. As the two of them get to know each other, Cassidy fantasizes about the family and happy-ever-after he never thought he'd have, and Mark starts to yearn for Cassidy's wide-eyed kindness and surprising creativity. But first they have to overcome Cassidy's fears, because there is so much more fun to be had during Christmas than just being on time.